"The 2018 Mercedes-AMG E63 S is similarly priced, quick, and powerful, but is heavier and isn't as tuned-for-the-track as the Bimmer. Other competitors, like the*Audi RS 7,*Cadillac CTS-V, and*Porsche Panamera*are worthy of comparison, but none, for various reasons, align perfectly with the latest M5."
https://www.autoblog.com/2017/12/05/...-drive-review/